Liquid-dropper.



Patented Nov. 9, 190 9.

witnesses.

union.

EUEIDAfi K. SCGTT, 9F KANSr'iS CITY, MISSOURI.

LIQUID-EROPPER.

Application filed a'une 11,

To (Lllw/wm it may concern:

Be it known that I, EUEIDAS K. Soo'r'r, a citizen of the United States of America, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful improvements in Liquid roppers; and 1 do hereby declare that the followin isva full, clear, and exact description of te invention, such as will enable others to make-and use the some, reference being had to the accompanying drawings, fication.

In the treatmentof general diseases, and in the administration of inedicaments within; the rectal cavity, and particularly that of salt Water, for assimilation with the blood through the rectum, should be minute and equally so that absorption shall be complete, and failure in this respect atonce observcal. in the ordinary liquid dropper the: amount is variable, and this is owing to the variable ness of liquid supply.

The objectof my invention is to afford a minute supply of the liquid equally proportioned or measured and self regulated, the construction of which invention will be first fully describe 'and then specifically pointed out in the claim.

in the drawings: Figure l. is a side view of the improved liquid dropper connected with the elevated reservoir, distribution tube and nozzle. Fig. 2: an enlarged vertical sectional \ion of the improved dropper. Fig. 3. is a. view of the dropper as seen in Fig. Hi'lORilllg an alternate regulator. F 4. a. transverse, sectitmul view, taken on the line gr, w, on Fig. 2. Fig. is a view oi" the drop 'icr as in Fig. 52, showing a modification. l ig. i5. is a dctaii View of the liquid regulator.

Re erring to the drawings, ljtl indicates the btdy of the 1' mid dropper, which consisls of a cylindrical sight lube, oi? the proper length and made preferably of lruinluccnt material, such as glass.

A, portion of tho u u icr end oi the tube 10 drawn inwardly the proper distance, and with agradnal reduction to llJl'll'l a ll(' 'l{ 12, the opening 13 in which HWit is considon ably than the inner vii-"unilcrcnce oi the tube.

Viithin the opening I a, short disturuzc within pro'pori ioned,

l2 and end fl, m" not: the

and showing the Specification 01" Letters Patent.

forming a part of this specithe quantity reqniredf is gradually reduced Patented Nov. 9, icon.

1909. Serial No. 501,552.

of tube 10 is inserted the lower end of a liquid dispensing or drop tube 14, smaller in circumference than tube 10, the outer surface of which tube is fitted closely and hermetically to the inner circnn'iferencc of the opening 13, of the neck 12, of tube 10.

' he lower end portion 15, of the tube i l,

in circumference or tapered downwardly and inwardly and ap proximately cone-shaped, and at the lower end of which reduced portion 15 is a small orifice 16, through which the liquid is discharged in small or restricted. quantities or drops.

Within the lower portion 15, of the tube 14, gravity capillary liquid regulator 'llns constitutes the rc' rulating means for regulating the minuteness and frequency of the liquid passing through the orifice l5, and is made from such material of aspccific gravity greater than its "buoyancy in Water, such as hard rubber. The regulator 17, as illustrated, is elongated or concsluipcd, and in length slightly less than that of the reduced portion 15, of the tube l4, and normally the lower surface of the regulator is in contact With the inner surface of said portion 15, of tube 14. The lower end portion of the sight tube v10 is also reduced in circumference and its sides inclined downwardly and inwardly at is, to a point 19, from which point the portion 20 reduced in size is extended downwardly a considerable distance.

21 indicates a liquid-holc'ling bag or reservoir, made of'india rubber preferably, and of the usual'description for holding and dispensing by gravity a quantity of liquid. This bag is provided with an opening 22, at

its upper end, for the introduction of the liquid. With the said upper end and back portion of the bag is connected a ringor loop 23, by means of which the bag may be held suspended upon the wall or other support, at the described height.

With the lower discharging end of the bag is connected the upper end of a small liquidcoi'ulucting tube 25, made of rubber, within the lower end of which tube is inserted the upper end of the dropper tube 14, the contraction of which tube with the surface of tube 14 forming an air-excluding connection. With the other end of the tube 2.. is connected an eloi'igaled nozzle 26.

the :uiininistration of the liquid the further flow is impeded by the device 17,

which rises slowly in the liquid, so as to admit of a small quantity to pass around the regulator 17 as further described, thence emerge through the orifice 16, in small drops, which pass through the sight tube 10, thence into the smaller portion 20, thence through pipe 25, to the nozzle and emitted from the nozzle in successive drops. Should the quantity of the liquid in the reservoir 21 be sufiicient, the specific gravity of the...device is such as to rise and fall in the tube 14 Without variance in the quantity discharged from the orifice 16, so that a given quantity of the liquid may be administered in a given time.

The regulator is composed of such material, preferably hard-rubber which is nonabsorbent and sui'liciently dense, that the capillary attraction between it and the liquid used is repellent, and therefore in the rise of the regulator 17 a vacuum is occasioned by a suflicient number of the molecules passing the side of the regulator to form a drop, and when the drop is formed gravity attracts the drop, displacing that much liquid,

and permits'the repellent capillary force existingabetween the fiuid and regulator to raise the regulator 17 sufliciently from close contact with the portion 15, of the dispensary tube to permit another drop to form, as above described.

Accuracy in the dispensing of the liquidis thus obtained at all times, and a measured quantity of the liquid passes the regulator and the drops which fall through the sight tube are equally proportioned.

, In the construction of the tubes 10 and 14, from glass, the oining of the tubes with the neck 1s readily accomplished by fusion, or the tube may be blown and formed together. In order that the regulator may be retained within the reduced portion of the tube 14, the tube is made thicker externally as at 27, in Fig. 5, and the inner circumference of the upper end made smaller, restrict-- ing the size of the tube at the point 28, Where the union is made with the slght tube. I have shown the regulator cone-shaped in form, but I do not wish to be confined to the shape of the regulator, as the form may be varied, and a ball device employed, as in Fig. 3, if preferred.

\Vith the use of the sight tube the quantity absorbed in administration is readily perceived, as well as any back-flow from any cause backward through the nozzle 26.

Such other modifications may be employed as are within the scope of the appended claim.

Having fully described my invention, what I now claim as new and desire to secure by Letters Patent is:

In liquid droppers, a liquid dispensing receptacle having a restricted discharge opening, means for supplying liquid to said receptacle, and a specific-gravity regulator for regulating the discharge of the liquid.

EUEIDAS K. SCOTT.

\Vitnesses EDWARD E. NABER,

CALVIN S. MA'rsoN. 

